Apparatus for forming articles



J. S. STULL `lan. 19, 1932.

A APPARATUS FOR FORMING ARTICLES Filed April 2, 1930 2 Sheets-Sheet l.92 il .2 67 6 .I a? gf as f77' i 2/54 w /4' 52 4 9g 293 f g /7 3 a 36a5 as 32 25 Y 4/ J9 fte -/f /g/fn/'E f v//-rt 4 4 a 9 3- /7u` @a 3/ 2 aaa g/ 34 *93 /7 i?, L f 6/ 6537 24 /aaaa Z .-i 7 76, 74 I Hm L` @wwf/2y.I

Jan. 19, 1932. J. s. sTULL 4APPARATUS FOR FORMING ARTICLES Filed April2, 1930 2 sheets-sheet 2 Patented Jan. 19, 1932 UNITED STTES PATENTOFFICE .JOHN s. sTULL, OE CHICAGO, ILLINOIS, AssIaNoRr 'ro/WESTERNELECrItaIc COMPANY, INCORPORATED, OE NEW YORK, N. Y., A COEI'OEATION OENEW Yom;

. f AEPAEATUSEOR EOEMING ARTICLES 'Application meay April 2,

rIhis inventionv relates to apparatus for forming articles, and moreparticularlyV to the manufacture, of piece parts on automatic screwmachines wherein successive forming J operations are performed on ablank or bar of stock to produce piece parts of predetermined shape anddimensions. 'l l l The primary object-of this invention is to provide anapparatus-designed to facilitate the forming of articles rapidlyfandaccurately and requiring-a minimum of' attention on the part of anoperator. Y f In accordance with one embodiment of this invention asapplied to multiple spindle automatic screwmachines, the usual rotarystock spindles mounted in a rotary or indexable turret are each providedon their forward ends with a-series of notches or teeth. Adjacent thenotched forward endsof the stock y'2,0 spindles isa group of drill headswhich are movable llongitudinally towardV and -away from the turret atpredetermined intervals. The drill heads each carry a group of rotarydrills for drilling two groups of holes an end face of the article beingformed from the stock,` one group being formed in the stock while thestock is lin one positiom while the other group is drilled when thestock is indexed to theY next succeeding position. When thedrills ofeach group" areidle they are rotated by an individual` friction drivemechanism at a speed whichis slightly .less than that of the stockspindle. Each group of drills has a plurality of yieldingly mou-nt- Led'pins corresponding in number to the teeth on the end of each stockspindle, which when the drill heads move t-o a drilling position enjgage the teeth on the stoclrspindle' and cause? n q the positiverotation of the drillsat the speed ofthe stock spindles. TheAdifferential between the 'speeds of the stocklspindle and the group ofdrills is slight, and consequently the group of drills is quickly andwithout ,.45 damage brought to the same speed as the stock spindle,slippage occurring Vthe friction drive mechanism for the drills. ,n AVOther objects", and-,advantages-fof thisfy invention'iwill more fullyappear fromthe folf 50 lowing detailed descriptionV takenin"connec-v1930. v serial No. 440,920.

Fig. 1 is a fragmentary longitud inal view,

partly in section, of a multiple spindle auto- 'matic screw machineembodying th lof this invention;

Fig. 2 isa vertic e features Fig..Y 3 is alvertical section taken ontheline Figa is a vertical-section taken on the: line 4-4 of Fig. l;

Fig..` 5 is aV fragmentary vertical section taken on theline .5*5 ofFig. 1;

Fig. 6 is a detail sectionftaken o 6-6of Fig. 2, and

Fig. 7 isaperspective view of various tools to perform work onV theends' of the bars.

- Referring nowtofthe drawings wherein Vsimilar reference numeral ntheline alsection taken on the line `2 2ofFig./1; A l

an article produced bythe apparatus of this invention. The apparatus.embodying features ofthis invention 'and illustrated in Figs. 1 to6,1nclusive, is designedto.beappliedl to an automatic screwmachine ofthe type 4whereinla plurality of rotary tools are positionedv at spacedistat'ions,-and a plurality ofbars` of stock are held in'spindles whichare rotatably mounted in a turret which is intermittently rotated toindex the bars successively `into, juxtaposition with each of thestations. The tools are carried on'a common slide designed to beadvancedperiodically. to bring the tools into operative positionsrelative to thebars of'stoclr, and .the bars are rotated about theirrespective ax by the spindles to causethe in detail, s indicate likeAparts throughout the several views, and particularly to Figs. 1 and 3,aL rotatable tur ret lO'carries a plurality of stock spindles (notshown) which terminate in stock hold.-

ingic'hucks 11,' only one of which isv shown i fragmentarily in Fig. 1,rand4 the forward. ends of twofin Fig. 3',v since all areidenticalfinconstruction.` The spindles and. chucks' 11 yare positioned at-i spacedlypoints 'aroundf thepe'- riphery ofthe rotatablefturret 10 and aredesigned toreceive the-.several bars of stock 12. Suitablelfknowndriving meansz (not shown) is provided'forrotating th e spindlescarrying the chucks 11 about their respective axes, the bars 12 beingperiodically advanced longitudinally of the chucks 11 by suitableadvancing means, which form a part of the known automatic machines andare not shown in the drawings.V rlhreadedly secured, as indicated at 13(Fig. 1) to the forward end of each chuck 11 is a ring 14 closelysurrounding the periphery of the bar 12 and provided upon its outer endface with a plurality of, in the present instance live, equally spacedserrations, notches or teeth 17 provided with comparatively longinclined faces 18 extending around the ring and short flat faces 19extending in their shorter dimension parallel -to its axis of rotationwith the chuck 11. The purpose of the teeth 17 will be made apparenthereinafter.

Mounted upon a. slide of known construction (not shown) by means ofbrackets 29, one of which is shown fragmentarily in Fig. 1, areV twodrill heads 21. The drill heads 21 are disposed adjacent the forwardends of they spindles carrying the lchucks l11 in turn supporting thetoothed rings 14; Suitable actuating means of known construction serveto advance periodically` the slide carrying'the drill heads 21 in timedrelation with the indexing of the turret to bring rotary drills 22carried by the heads 21 into operative positions relative to the bars12, which at this time are rotating, as well as the drills, as will beexplained hereinafter. The driving and actuating mechanism for rotatingthe spindles (not shown) carrying the chucks 11, closing and releasingthe chucks, Aadvancing the bars 12 to the chucks, rotatably indexing theturret 10 and advancing the drill heads 21, which are operated in propersequence, is not shown in the drawings, since this mechanism forms nopart ofthe present invention and a disclosure thereofisnotbelievednecessary toa full understanding thereof.

The particular apparatus illustrated inthe drawings is designed to drilltwo groups of displaced apertures in a circular face of a telephonetransmitter electrode 23 (Fig. 7) after it has been partially formedfrom the bar 12 but not severed therefrom. vA plurality of othertools'which actin propersequence with the drills 22 andtheintermittently indexed bar 12 to perform work thereon to complete theelectrode 23 are not shownV in the drawings, since they are notnecessary to a complete understanding of this invention. Each of thedrill heads 21 includes a frame 24 which is adjustably mounted upon itsbracket 2O by means of a plurality of clamping nuts and set screws 25and26, respectively, (Figs. 1 and 4). The clamping screws 25 extendthrough enlarged apertures 28 formed flange on theV frame 24 and arethreaded into the bracket20 andl after "the axial align- Vment'of theseveral grups of drills 22 vcaration.

ried in the heads 21 with the bars 12 carried in the chucks 11, the nutsof the screws 25 are tightened and thereafter the set screws 26 aretightened to insure the vretention of the alignment. Rotatably mountedin the frame 24 is a drill carrier 29 (Fig. 1) having an extensionmember 30 at its right end secured to rotate therewith by means of ascrew and washer 31, the

carrier 29 andthel member 30 beingjournaled `upon the frame 24'in ashouldered aperture 32 Aformed therein, at points 33 and 34,respectively. Keyed as indicated at 36 within the aperture 32 of theframe 24 is an internal ring' gear 37, the ring gear being positioned inan annular chamber 38 formed between the carrier 29 and the extensionmember 3U therefor. 1 Y

The drills 22, five in number in the present embodiment' of thisinvention, and mounted in each head 21 and journaled in each of thecarriers 29, as shown in Fig. 2, are similarly arranged about the axisof the carrier. y Referring to Fig. 1 wherein one of the drills 22 isshown longitudinally, each of the drills is heldin a chuck spindlef39provided at its forward endwith gripping jaws 40 actuated to grip orrelease the drill by turning a collar 41 threaded onto the forward endof the chuck which is split to form the jaws. The chuck 39 isprovidedwith an internal flat surface 42 with which an outer flat surface uponthe drill. is aligned, thus positively preventing relative movementbetween the chuck spindle 39. and the drill when the drill is properlymounted in the chuck spindle. The inner end of the .drill 22 is engagedwith theouter end of a yscrew 45 `threaded axially into the chuckspindle 39. Formed on that portion of the periphery of each of the chuckspindles 39 which lie within the chamber 38 is a gear pinion 46, each ofthe pinions meshing with the internal ring gear 37 mounted in the frame24. Formed axially in the inner end surface of each of the chucks 39 isa ball Vseat 47 engaged by a ball 48. rEhe balls y48 ride at pointsopposite the seats 47 upon an annular 'plate 49 clamped at its inner endagainst a shoulder provided upon a reduced endk of the extension ymember30 of the carrier 29 by the screw and washer 31, the screw extendingthrough the reduced end of the extension member and threaded axiallyinto a reduced end of the drill carrier 29. Threaded into the outer endof the shouldered aperture 32 of the frame 24 is a plug 54provided witha'cover portion 55 for the screw and washer 31. Fitting between theopposed surfaces of the plate 49 and the plug 54 is a roller bearing 56``'for' :taking the thrust of the drill carrier 29 during the drillingoper- Each of the drill carriers 29 carries a group of yieldably mountedpins 59, live in number, correspondingV toV the number of teeth. 17

thereof. Each formed in the endfof ythe ring 14 carried by the forwardend ofthe bar chuck k11 and also the number of drills 22k within each`group groupof pins 59 is similarly arranged about the axis of itscarrier 29 and outside the drills 22 4also carried thereby,`

respect to the drills suoli that each'pin lies Y .midway between twodrills.` With thisI arrangement it will be apparent'that the bars 12after being drilled by the lower group of drills 22 and thereafterindexed to the upper vgroup of drills the latter will drill the bars atpoints half way between the previously drilled apertures. The group ofpins159, as

'will be observed in Fig. 3, are disposed `radivally with respect totheaxis of the bar 12t0 bev drilled and outside of the4 periphery there` ofso that they will engage the flat faces 19 ofthe teeth 17 substantiallymidway of their length.

The pins 59 are each provided longitudinally with an axialaperturewithin which is mounted a compression spring GOengaging Vat vone end anannular shoulder providing a reduced diameter to the aperture, and atYits oppositeend the inner reduced end of a plug 61 having a sliding fitin the: aperture of the pin 59, the outer end of the plug being threadedinto the carrier v29. f 'It will be ap* parent that the AspringOnormally'will hold the pin 59 in its outermost position, its movenientbeing limited by cooperating' shoulders formed upon the carrier29randthe pin 59, and when the pin moves inwardly in the operation of theapparatus, it slides upon the reduced inner end offtheplug 61. During'this latter movement of the 'pin 59 theair in the aperture inthe carrier29 between the pin 59 and the plu-g 61 escapes through an `aperture 62`formed in the plug 61 and into the axial' aperture of the pintoatmosphere through slots 63 formed in the outer` end of the pin. p

The frames 24 for the drill carriers 29 Aare surrounded byacommonhousing 64 which is clamped tothe-upper'frame-24 by a bolt 66 andan integral-split strapportion 67 of the housing (Figsf 1 and 2),individual open'- ings 68 v(l3`ig-2`) being provided in the housing' foreach 'of-theframes 24. The lower frame 24 is clamped to the housing .64by a bolt 69 and a split strap 70 (Fig-2), which is secured byaQpluraIity of screws 71 to a rear wall of the housing.Directly'belowthei upper drill head 21 (Figs. 1 and 2)'jand ex-.

tending parallel to the axis of rotation thereof is a main-'drivesliaft74 of thev screw machine from'which the driving and actuating mechanismV.forthe various part-s' of the inacliine are' driven. VKeyed to rotatevwith-the shaft 74 but slid-able thereon bymeansf of Vring 96. f

a 4spline connection 75 is a gear` 7 6r having an annular channel 77formedinitherperiphery `of ahub portion 78 at its` right end (Fig. 1).

Integral'with and depending from the housing 63 is a yoke79'which. isengaged 1in-the channel 77 of the gea-p76'. With this construction therotating gear 76 will niovewith the drill heads 21 when the latter areadvanced or retractedfrom, the bars of; stock i12 mounted inthe turret10.

The gear 76 is connected to each ofthe drill carriers 29. Vbysubstantially similar indi'vidual friction drive kmechanisms,'whichserve to rotate the. drills 22 when `they are idle at a speed which isslightly less than the speed ofthe bars 12 and in a similar direction.`The' frictiondrive mechanism for the upper carrier as shown inFigs. land2 comprises the followingmechanism- Secured to the forward end ofthedrill'carrier 29by a plurality of screws 81=is la driven ring 82` pVprovided with suitable apertures through which extend the drills 22 andthe pins 59 and which is also provided with an annular surface 83.Engaging the annular surface 83` is a friction ring 84 composed of libre,or other-'suitable material which is fixed toa surface 85 of a drivenring-gear 86 provided with external teeth meshing with the gear76carried by the shaft 74. Secured to the ring gear 86and projecting froman inner sur;- V

face thereof are four equally spaced pins 88,

two of which are illustrated in Fig. 1 and one inFig. 5. The rear endsof the four pins l' 88l are enga fred iniiotches 89 formed in; the 'speriphery ora friction ring 90 engaging av surface 91 ofthe driven ring82 which yis op-r posite toits surface-83- Secured tothe rear surface ofthe driving ring gear 86 by a pluralitypof screws92 is a pair of rings95carrying therebetweenk a plurality of equally Y spaced Aand inwardlyextending leaf springs 96. yTheI inner ends of the springs 96 engageunder tension a vided upon'tlie rear surface of the friction During therotation ofthe driving ring "gear 86 it carries with it the springs 96vand through tliepi-ns 88 carried thereby engaging the notches 89 Vofthe friction ring 90 the`latter also rotates therewithand due tothetennarrow annular surface proi V sion ofthesprings 96fthe friction'ring84.

fixed tothe surface 85 of the drivingring gear 86isf-engaged against thesurface 83 of the rdriven"ring 82l with suihcient driving pressure' tocause the latter to rotate. As hereinbefore described'the ring 82 isfixed to the drill carrier 29 by the screws Sland will therefore rotatewith the ring 84 and simulf taneously therewith the gear pinions,46,011] thevdrill chucks 29 revolvingmwith the carrierv andIvy meshingfwith the stationary'A internal f ring gear will also rotateabouttheir'in? dividual axes. f Due tothe closenes'sof'theV axes#v of:rotation of the drill carriers i"291 and isa,

i portions 99 rings100 are mounted in the apertures 98 the overlappingdiameters of the friction drive mechanisms therefor, as clearly shown.in Fig. 2, it is necessary to arrange them in different verticalplanes. By providing the gear 76 1). with a. wide peripheral face thetwo offset drivingring gears 86 may mesh therewith. Referring'to Fig. 6which shows fragmentarily the friction drive mechanism for the lowercarrier 29, theV Vdriving ring gear 86 is shown meshing with the gear 76at its left end, only the drivin@ ring gear and its cooperating partsare reversed relative to the position of the similar parts which drivethe upper drill carrier, althoughthe action of the friction drivemechanisms in both cases is the same. lt is to be understood that thedirection of rotation imparted to the drill carriers 29, which isclockwise as viewed in Fig. 2, by the friction drive mechanisms justydescribed receiving its motion fromv the main drive shaft 74, is thesame as the direction of rotation of the spindles and chucks 11 whichcarry the bars 12 to be drilled, but as viewed in Fig. 3, which is aview looking in a direction opposite to that of Fig. 2, the direction isshown as anticlockwise.

Y Secured to the forward end of the housing 611 is a cover plate 97which surrounds the driving ring gears 86 and entends forward therefrom,its'forward wall being provided with Aapertures 98 into which extendcollar of the driven rings 82. Felt and engage the .periphery of thedriven rings 82 for VtheV purpose of preventing the splash and dischargeof oil from the drill heads 21. Y. Y

ln the operation of the embodiment of this invention hereinbeforedescribed, a plurality of bars 12 are inserted in the spindles andchucks 11` of the turret 10. The turret 10 'carrying the continuouslyrotating chucks 11 holding the 12 is intermittently indexed in aclockwise direction, as viewed in Fig. 3, as indicated by the arrowbetween the two chucks 11, which represent the drillingstations e lntim-ed relation with the indexing movement of the turret 10 the slide(not shown) which carries the drill Yheads 21, which are axially alignedwith the rotating bars 12, advances towards the bars 12. The heads 21 ashereinbefore described each carry live continuously rotating drills 22,the drill carriers 29 of the heads 21 being rotated in the samedirection asfthe bars 12, and at a speed slightly less than the speedoi3 the bars by the friction drive mechanisms. In. the

advance of the drill heads 21 towards the' bars 12fthe five yieldinglymounted pins 59 .mounted'in each head-21 engage the live teeth 17 oneach ofthe rings 14 fixed to the forward end of the chucks 11 andimmediately are rotated against the flat faces 19y thereof, due to the.greater speed of the chucks 11 as compared to the drill carriers.Immediately the positive rotation of the vdrill carriers 29 at the speedof the chucks 11 and the bars 12 carried therein is effected and withoutdamage due to slippage occurring between the driving rand driven membersofthe friction drive mechanisms, as will be readily apparent from theprevious description. V Y e. The drilling of five apertures `101 in thebars 12by the drills 22 proceeds'to a proper depth, which is indicatedin dotted outline in Fig. 1, wherein is illustrated the position of thedrill heads 21 at the termination of their advance towards the turret10. Referring to Fig. 3 it will be observed that the upper ar 12 whichis the bar last advanced from the lowerposition has ten apertures 101formed therein, five in axial alignment with the drills 22 and livepreviously drilled when the particular bar 12 was stationed at the lowerposition. Y

TWhen the apertures 101 `in bars 12 have been drilled to apr-edetermined depth, the drill heads 21 are automatically retracted bythe slide (not shown), and during the retraction` thereof the turret 10Vis again indexed to position the lower bar 12 at the upper drillingposition and another bar notV yet drilled. in the lower drillingposition, where upon the drill heads are again advanced and the drillingoperation is again repeated in the manner previously described. In theretraction of the drill heads 21 the' pins 59 are disengaged from theteeth 17 on the ring 14 carried by the chucks 11 and immediately therotation of the drill heads 21 by the friction drive mechanisms is againresumed, but as before described, at a slightly decreased speed. 1t willbeV understood that the embodiment of this invention Vherein describedand illustrated may with appropriate changes be adapted to operate on awide variety of piece parts other than that illustrated withoutdeparting from the spirit and scope of the appended claims.

What is claimed is: 1. In an article forming apparatus, rotary means forsupporting and continuously rotating stock, a` tool carrier rotatablecoaxially with the stock, a tool mounted in the carrier for operating onthe stock, means for relatively moving axially the carrier and the stockto position the tool in operative relation with the stock, means forrotating the carrier when in Yan inoperative position at aY speeddifferent'than the speed of the stock support, and means associatedwithlsaid*` carrier and operative upon a relative axial movement betweenthecarrier and the stock, cooperating with-said stock support forrotating said carrier. Vz V 2. In an article forming apparatus,rotary(means. for supporting and continuously ro- Y tating stock ,a toolcarrier rotatable coaxially with the stock, a tool mounted in thecarrier for operating on the stock, means for rotating means associatedwith said stock support and Y the carrier operative during a relativeaxial movement between the carrier and the stock for causing the carrierto be rotated at the speed of the stock support. n

8. In an article forming apparatus, rotary means for supporting androtating stock, a-

tool carrier rotatable coaxially with the stock,

a tool mounted in the carrier for operating on the stock, means foradvancing. axially the carrier to move the tool into operative relationwith the stock, `means for rotating the carrier when in an inoperativeposition ata speed different than the speed of the stock support, andmeans associated with said stock support and the carrier coacting duringthe advance of the latter'for effecting the operation of the means forrotating the carrier for causing the latter to be rotated from thestocksupport and at the speed thereof.

4. In an article forming apparatus, rotary means forsupportingandrotating stock, a tool carrier rotatable coaxially with the stock, atool mounted in the carrier for operating on Y the stock, means foradvancing axially the carrier to move the tool into operative rela-`tion with the stock, driving' means for rotating the carrier when in aninoperative position at a speed dierent than the speedof the stock, saiddriving means including a friction drive mechanism, and means associatedwith said stocl support and the carrier operatively engaged during theadvance of the latter for rotating the same from the stock support andat the speed thereof.

5. In an article forming apparatus, rotary means` for supporting androtating stock, a tool carrier rotatable coaxially with the stock, atool mounted in the carrier for operating on the stock, means foradvancing axially the carrier to move the tool into operative relationwith the stock, means for rotating the carrier when in an inoperativeposition at a speed different than the speed of the stock, a serratedsurface on the stock support, and a yieldable member on the carrier forengaging the serrated surface on they stock support during the advanceof the carrier for effecting the operation of the means for rotating thecarrier for causing the latter l to be rotated from the stock supportand at the speed thereof.

6. In an article forming apparatus, rotary means for supporting androtating stock, a tool carrier rotatable coaxially with the stock, atool mounted in the carrier for operating on the stock, means foradvancing axially the carrierto move .the tool into operati-verelationwith the stock, driving means for rotating the carrier when in 'aninopera'- tive position at af speedy different. than Ythe speed ofthestockandiina similar direction, said dri-ving means including a frictiondrivev mechanism, and means carried-by 'the `stock support and thecarrier coacting during the ladvance of the latter for causing therotation of the carrier from the stock support and at Y. the .speedthereof.

7: Inv` an article forming apparatus, rotaryimeans for supporting andcontinuous'- ly rotating stock, a tool carrier rotatableco axially withthe stock, a tool mounted inthe carrier .for operating on the stock at apoint removed from its axis of rotation,means for niv rotatingthecarrier when in lan inoperative position at a speed different thanthe speed of the stock support, means for relativelymoving axially thecarrier andthe stock'to position thetool in operative relation with thestock, and means associated with said stock supportand the carrieroperative during a relative axial movement betweenthe carrier andthestock for causing the tool carrier to 'be rotated at the speed of thestock supportf 8.V Inan article forming apparatus, rotary.n i

lmeansfor supporting androtating stock, a

tool carrier rotatable coaxially with the stock, a rotary Atool mountedin thexcarrier for operating on the stock, yat av point removedl fromits axis of rotation, means associated Y with the carrier and,operativelyl connected with the tool forl causing the'frotation lofythe tool about itsvown axis when the carrier rotating, means forrotating the carrier when in-an inoperative' position at a speeddiffer-1. ent than the speed of the stock support, means for relativelymoving axially the carfy rier and thestock to position the tool inoperative relation with the stock, and means as` f sociated withy saidstock support andthe car`` rier operative upon? a` relative axial .movesment 'between thefcarrierand the stock forz i causingthe carrier to berotated at the speed of the stock support.

9. In an automatic screw machine ofthe type wherein a plurality ofindividuallyy rotatable'stock supporting and rotating spinL dles arerevolved about a common central 'K axis to indexthem successively withrespect to a fixed station, a. tool carrier positioned at` the stationrotatable ycoaxially with the stock, a tool mounted in the carrier foroperatingk on the stock, means for rotating the carrier when in aninoperative position at a speed different than the speed ofthe stock,means' kfor advancing axially the carrier to move the toolV intooperative relationV with the stock, and'means associatedL with said'stock spin-- dles and the carrier operative during thev advance of thelatter for causing the carrier to b e rotated at the speed of the stockspindle.

* 10. In an automatic screw machine of the type wherein a plurality ofindividually ro tatable stock supporting and rotating spindles arerevolved about a common central axis to index them successively Withrespect to a fixed station, a drill carrier .positioned at the stationrotatable coaxially With the stock, a drillmounted in the carrier foroperating on the stock at a point removed from its axis of rotation,means associated with the oarrier and operatively connected With thedrill for causing the rotation of the drill about its own axis When thecarrier is rotating, driving means for rotating the carrier When in aninoperative position at a speed dier'ent than the speed of the stock andin a similar direction, said driving means including a friction drivemechanism, means for advancing the carrier to move the drill intooperative relation With the stock, and means associated Withsaid stockspindles and the Carrier operative during the advance of the latter Jforcausing the carrier to be rotated at the speed of the stock spindle.

11. In an article forming apparatus, rotary means for supporting andcontinuously rotating stock, a rotatable tool carrier longitudinallyaligned With the stock, a tool mounted inthe carrier for operating onthe stock, means for simultaneously rotating and advancing the carrierto cause rotation of the tool and a movement thereof into operativerelation With the stock, and means associated With said stock supportand the carrier operative upon the tool being moved into operativerelation With the stock for causing the carrier to be rotated directlyfrom the stock support.

12. In an article forming apparatus, rotary means Yfor supporting andcontinuously rotating stock, a reoiprocable hollow frame, an internalgear fixed therein, a tool carrier longitudinally aligned with the stockand rotatably ournaled in the frame, a plurality of rotatable toolholding spindles journaled in the carrier, a pinion carried by each ofsaid spindles and meshing With said internal gear for causing a rotationof the spindles When the carrier is rotated, a tool carried by each ofsaid spindles for operating on the stock, means for moving the frame toaxially advance the carrier and thereby move the tools into operativerelation With the stock, means for rotating the carrier When in aninoperative position at a speed different than the speed of the stocksupport, and means associated With saidstoclr support and the carriercoaoting during the advance of the latter for causing the latter to berotated Jfrom and at the same speedas the stock support;

In Witness Whereol hereunto subscribe my name this 22nd day of March, A.D. 1930.

JOHN S. STULL.

